wow , writing that list was a good ride through memories! i could do 46 without much pausing to think, had to dig for the last 5.
i included the ratings to see what shows up most often, and it is 5.11. interesting.
archangel, fern hill, and waimea are also the only very short ones (10-12 m ), but those also have some of the best moves..
there is a bunch of long routes that i thought were super good, but where no pitch in particular stood out.

This is going to be individual lists of 50 favorite pitches, tailored to the ability and opportunity/awareness of each poster. I've actually done very little climbing in comparison to the world of opportunities, and will limit my submissions according to what I think might be considered (even if only briefly) for a global list:

P2 on Hawkman's Escape
P2 Reed's Direct
P (2,3,4?) on Snake Dike - the runout face to main Dike, and long runout Dike
the arete pitch on Traveler's Buttress, looking down the spine. Or maybe substitute with a similar (better) pitch on Via Aqua near Yosemite Falls.

Honestly though, I don't think anything I've climbed would make the top 50 pitches in the world, after the number of striking ridgelines and buttresses and faces and crack systems I've seen in pictures. If we're talking Yosemite Top 50, I've got a decent chance of having done at least one.

Edit: Doh, the Narrows! How could I forget! That should certainly be in an all-time classic list, maybe even on a global scale. Boo-ya, I got one.

The last pitch of Outer Space (5.8 or 5.9) at Snow Creek Wall is just an amazing crack.

They Died Laughing (5.9) is one of my all-time favorites at Cathedral - along with The Layback pitch on Recompense (5.9) - and I hate laybacking on lead but I'll fight for that pitch every ascent. Let's not forget that jamcrack last pitch of Diedre (5.9), surprisingly not pumpy if you stem it.

I agree with Exasperator (5.10) at Squamish. Split Pillar (5.10) spit me out once, and I can't wait for another spin.